1 /* Copyright (C) 1991, 1992, 1995, 1996, 1997 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU C Library; see the file COPYING.LIB. If not,
16 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 Boston, MA 02111-1307, USA. */
19 #include <msvcrt/stdlib.h>
20 #include <msvcrt/wchar.h>
22 #include <msvcrt/errno.h>
23 #include <msvcrt/wchar.h>
24 #include <msvcrt/internal/file.h>
30 static const wchar_t encoding_mask[] =
32 (wchar_t)~0x7ff, (wchar_t)~0xffff, (wchar_t)~0x1fffff, (wchar_t)~0x3ffffff
35 static const unsigned char encoding_byte[] =
37 0xc0, 0xe0, 0xf0, 0xf8, 0xfc
40 /* The state is for this UTF8 encoding not used. */
41 //static mbstate_t internal;
44 //extern mbstate_t __no_r_state; /* Defined in mbtowc.c. */
47 __wcrtomb (char *s, wchar_t wc);
50 * Convert WCHAR into its multibyte character representation,
51 * putting this in S and returning its length.
53 * Attention: this function should NEVER be intentionally used.
54 * The interface is completely stupid. The state is shared between
55 * all conversion functions. You should use instead the restartable
61 wctomb (char *s, wchar_t wchar)
63 /* If S is NULL the function has to return null or not null
64 depending on the encoding having a state depending encoding or
65 not. This is nonsense because any multibyte encoding has a
66 state. The ISO C amendment 1 corrects this while introducing the
67 restartable functions. We simply say here all encodings have a
72 return __wcrtomb (s, wchar);
77 __wcrtomb (char *s, wchar_t wc)
90 /* Store the UTF8 representation of WC. */
91 if (wc < 0 || wc > 0x7fffffff)
93 /* This is no correct ISO 10646 character. */
100 /* It's a one byte sequence. */
106 for (written = 2; written < 6; ++written)
107 if ((wc & encoding_mask[written - 2]) == 0)
112 size_t cnt = written;
113 s[0] = encoding_byte[cnt - 2];
118 s[cnt] = 0x80 | (wc & 0x3f);